Madshus Xcelerator 2.0s unique construction and low weight gives you more power and better speed, while the bindings low profile provides optimum control in the track. With the included NIS key, you can easily place the binding in the desired position and move it forward for better control or backward for more speed. In combination with Move Switch, you can easily and without taking off your skis, move the binding forward or backward for increased control and speed.